Updated locations file

- Added missing stations KDGX, KICX, KTYX, KIWX, KSRX, KVWX, PABC,
PACG, PAEC, PAKC, PHKM, PHMO, PHWA, RKJK, LPLA. The list now includes
all global NEXRAD sites:
http://www.roc.noaa.gov/WSR88D/Images/WSR-88DCONUS-no-coveragetrimmed100
0.jpg
- Retired stations KJAN and KRMX moved to end of the list. They still
remain in the list for users who wish to import their historical data.
- Other stations arranged into correct alphabetical order.
- Station locations were confirmed (and some adjusted accordingly), by
looking up the locations at http://www.ncdc.noaa.gov/homr/
- Station locations have been confirmed by entering the coordinates
into Google Maps and visually sighting the NEXRAD radome in the
satellite picture. This was done for all stations, except KJAN and KRMX
which no longer exist. This was done only to confirm the locations;
there have been no coordinates determined solely from Google Maps, with
the exception of the Okinawa Japan station.
- Station elevations and WBAN numbers were confirmed (and some adjusted
accordingly) using data from http://www.ncdc.noaa.gov/homr/
- All WBAN numbers less than 5 digits have had leading zeroes added, as
is the correct way to represent these WBAN numbers.
- The "state" codes for Japan and South Korea have been replaced with
the proper ISO alpha-2 country codes.
Merge pull request #2 from U-238/master

Updated locations file